Improvement in motors for churns



H. ODELL.

MOTORS FOR cxwmm m.

' Patented K011211876.

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UNITED STATEs HENRY ODELL, OF PEEKSKILL, ASSIGNOR TO HIMSELF AND WILLIAMS.

PATENT OFFICE.

SINEY, OF NEW YORK, N. Y.

IMPROVEMENT IN MOTORS FOR CHURNS,.&c.

Specification forming part of Letters Patent No. 184,216, dated November7,1876; application filed l October 5, 1876. i

To all whom it may concern Be it known that I, HENRY ODELL, ofPeekskill, Westchester county, New York, have invented an Improvement inMotors for Ghurns or other purposes, of which the following is aspecification:

My invention relates to improvements in a machine or motor for whichPatent No. 160,460, dated March 2, 1875, was granted to me.

The object of my invention is to render the motor more efficient, and isaccomplished mainly by equalizing the power derived from the spring orsprings that impart motion to the machine, and also by modifying theescapement and transmitting mechanism, so as to reduce the friction ofthe same.

In the form of this machine heretofore used the power is communicated tothe escapementwheel direct from the spring-barrel, and, as aconsequence, the available power exerted is much greater when the springis freshly wound up than when it is nearly unwound, and so there iseither a waste of power at the start, or else not enough near the closeof a winding to do the work desired.

In my present invention the equalization of the power of the springs isattained by adapting to the machine the well-known principle of thebarrel and fusee, the manner of applying which is illustrated by theaccompanying drawings. I

Figures 1 and 2 are elevations of opposite sides of the machine, andFig. 3 is an elevation of one side in a plane at right angles to that ofthe other figures.

In each of the figures, A is the frame which furnishes bearings for thedifferent parts of the machine. B is the drum or barrel, containing thecoiled spring or springs, which are used in the usual waynamely, withthe outer end of the coil attached to the circumference of the barrel,and the inner end attached to the arbor a, a ratchet-wheel, b, 'on thelatter, together with the pawl c, serving both to hold the arbor fromturning, and to adjust the tension of the springs. serves to save thespring from damage in case the barrel, through accident, should besuddenly liberated. 0, Figs. 2 and 3, is a conical pulley or fusee,having its axis parallel to that It also of the drum B. The fusee has aspiral groove i Y traversing it, as shown in Fig. 3, which guides andretains in place the cord or chain wound upon it, and with which it isconnected to the spring-barrel. Q'The cord h (which may be of wire or achain, but preferablyof wire-rope for large motors) is so arranged, withreference to the fusee and spring-barrel, that when the latter exertsthe most strain the cord is on the smallest diameter of the fusee, andwhen the barrel is nearly unwound, or exerting the least power, the cordis on the largest diameter of the fusee. The smallest diameter of fusee,it will be observed, is not at the extremity, but near it, as thegreatest power of a coiled spring is not availably exerted when it iswound the closest, on account of the great increase of friction in thecoil itself when so wound. The end 01 of fusee-shaft is squared toreceive a key or crank for winding the machine. The shaft of fusee alsocarries the two ratchet-wheels D and E, (shown in Figs. 1 and 3,) one ofthe wheels, E, being rigidly secured to the shaft, and the other lyingagainst E, but not fastened to it or the shaft, it being free to turnabout the latter. The wheel D, which acts as an escapement-wheel,carries a pawl, 12, which engages with the ratchet E, so that the fuseecan be turned in a direction to wind it up without turning D, but cannotturn back to unwind Without moving the wheel D.

The circular motion of the escapementwheel is converted into oscillatorymovement in rock-shaft S by means of the pawls FF, which engage at oneend with the escapementwheel, and at the other are pivoted to the platem, which is rigidly secured to the rockshaft S. In the old form of thismachine the pawls are placed near together on one side ofescapemcnt-wheel, and are caused to engage alternately with the teeth ofthe wheel by means of stationary studs or pins, over which they wouldslide with considerable friction and noise. I overcome these objectionsin a great measure by placing, midway of the length of the pawls F F,pinsjj, which engage in slots in the links 6 'i, which are pivoted tothe stationary stud f. The reciprocating motion of the pawls F Fvibrates the links 6. '5, and thereby causes the pawls to be presentedin proper position to the teeth or" the escapement-wheel. As soon as theupper pawl F is liberated for its return movement, it is lifted up topass-the tooth by its weighted extremity F, or it may be operated by aspring. The lower pawl has weight enough in itself to cause it to fallwhile passing a tooth. The links 6 '5 are slotted where they engage withthe pins j j, to allow of play of pawl whileengaged with a tooth.

Thus arranged, the friction caused by the pins that guide the pawls inthe old machine is reduced to the insignificant amount caused by theswinging of the links i on the stud f, and the noise is also reduced toa like extent.

To the rock-shaft S is attached the arm 0, and its vibratory motion isconverted. into rotary motion by the rod 1', which connects with thefiy-wheel It at the crank-pin t. This wheel serves to give steadinessand regularity to the movement of the machine, and by placing a pulleyon its shaft the power or motion may be readily transmitted to otherpoints.

If the work to be done requires a reciproeating movement, such aschurning, &c., thebell-crank lever Q is used. This lever is pivoted to-aprojecting part of the frame A, and

arranged to operate substantially as described.

HENRY ODELL.

Witnesses: EUGENE B. TRAVIS, MARVIN B. SMITH.

